Punching and shearing machine.



No. 833,496. 4 PATENTED OCT. 16, 1906.

' c. ADAMS.

PUNGH ING AND SHEARING MACHINE. APPLICATION FILED JUNE 25.1906.

/N VE N 70H A TTOHNE) THE NORRIS PETERS co., WASHINGTON, D. c,

777a, aw:

UNITED STATES PATENT OFFICE.

PUNCHING AND SHEARING MACHINE.

Specification of Letters Patent.

Application filed June 25, 1906. Serial No. 323,408-

To aZZ whom, it may concern.-

Be it known that I, CHARL S ADAMs, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented new and useful Improvements in Punching andShearing Machines, of which the following is a specification.

This invention relates to a punching and shearing machine, the object ofthe invention being to provide a compact machine which can be usedeither to punch holes in metal plates or the like or to shear bars orplates of various forms and which will have great power in proportion toits size.

In the accompanying drawings, Figure 1 is a front view of the machine,the front guideplate being removed or broken away; and Figs. 2, 3, 4,and are sections on the lines 2 2, 3 3, 4 4, 5 5, respectively, of Fig.1, the front guide-plate being shown in these fig- A ures.

Referring to the drawings, 1 indicates the main frame of the machine,having at its base the flanges 2, by which it is secured to any suitablesupport. To said frame 1 are securely bolted, as shown at 3, theguideplates 4, said plates being also bolted together, as shown at 5, intheir upper portions through spacing-blocks 6. Between said platesslides a vertically-reciprocating carrier 7, which is depressed by meansof the links 8 9 of toggle-levers, the lower ends of the links 8 beingpivoted at 10 to the carrier and the upper ends of the links 9 beingpivoted at 1 1 to the guide-plates. The knuckles of said levers arepivoted to links 12, which are pivoted at their upper ends to extensions13 of a frame 14, guided to reciprocate vertically in theguide-plates-that is, in a direction transverse to the line between thepivots 11-and carrying a rack 15, which is engaged by a gear 16 on ashaft 17, operated by an arm 18, connected by a link 19 with a lever 20,pivoted at 21 in the guide-plates. This arrangement causes the powerapplied to the lever to be enormously increased when transmitted to thedownwardly-moving carrier 7. Said carrier has secured thereto a punch 22to coact with a block or rest 23 for punching holes; a shearing-cutter24, having in its edge half-round recesses 25 coacting with acorrespondingly-formed blade 26, secured on the frame 1 to cut roundbars; a shearing-cutter 27 having an oblique edge .coacting with a blade28 secured on the frame to cut fiat bar-iron; a shearing-cutter 29having two edges at right angles to each other coacting with acorrespondinglyformed blade 30 on the frame to out angleirons, and aplate 31, removably secured to the carrier and having a knife 32removably secured thereto and coacting with a blade 33 on the frame tocut plates.

I claim v 1. The combination of a cutter-carrier, supporting and guidingmeans therefor, two pairs of toggle-levers, each connected at one endwith the carrier and at the other end with said means, a frame slidingin a direction transverse to the line of the said connections to saidmeans, independent links respectively connecting said frame with theknuckles of levers, and means for reciprocating said frame.

Patented Oct. 16, 1906.

2. The combination of a cutter-carrier,

supporting and guiding means therefor, two pairs of toggle-leverssymmetrically connecting the ends of said carrier with said means, thelower ends of the lower links thereof being attached to said carrier andthe upper ends of the upper links being attached to said means, avertically-sliding frame, links connecting said frame with the knucklesof said toggle-levers, a rack carried by said frame, a gear meshing withsaid rack, an arm operating said gear, and power-multiplying mechanismfor operating said arm, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

CHARLES ADAMS. Witnesses JUSTIN GATES, W. HAYES.

